*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.app{min-height:100vh;display:flex;flex-direction:column}.navbar{background:#1a1a2e;color:#fff;padding:1rem 2rem;display:flex;justify-content:space-between;align-items:center}.nav-brand h1{font-size:1.5rem}.nav-links{display:flex;list-style:none;gap:2rem;align-items:center}.nav-links a{color:#fff;text-decoration:none;transition:opacity .2s}.nav-links a:hover{opacity:.8}.nav-links button{background:#dc3545;color:#fff;border:none;padding:.5rem 1rem;border-radius:4px;cursor:pointer;transition:background .2s}.nav-links button:hover{background:#c82333}.main-content{flex:1;padding:2rem;background:#f5f5f5}.dashboard-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.5rem;margin-bottom:2rem}.metric-card{background:#fff;padding:1.5rem;border-radius:8px;box-shadow:0 2px 4px #0000001a}.metric-card h3{color:#666;font-size:.9rem;margin-bottom:.5rem}.metric-card .value{font-size:2rem;font-weight:700;color:#1a1a2e}.login-container{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2)}.login-form{background:#fff;padding:2rem;border-radius:8px;box-shadow:0 10px 25px #0000001a;width:100%;max-width:400px}.login-form h2{margin-bottom:1.5rem;text-align:center;color:#1a1a2e}.form-group{margin-bottom:1rem}.form-group label{display:block;margin-bottom:.5rem;color:#666}.form-group input{width:100%;padding:.75rem;border:1px solid #ddd;border-radius:4px;font-size:1rem}.btn-primary{width:100%;padding:.75rem;background:#667eea;color:#fff;border:none;border-radius:4px;font-size:1rem;cursor:pointer;transition:background .2s}.btn-primary:hover{background:#5a67d8}.error-message{color:#dc3545;margin-top:.5rem;text-align:center}